520 PROF. JACOBI ON THE APPLICATION OF ELECTRO-MAGNETISM 
Tin. 
Alloy of lead with tin. (Pl. Sn.) 
Lead. 
Tin amalgamated. 
Lead amalgamated. 
Amalgam of tin. (Sn. Hg.) 
Alloy of zine with tin. (Zn. Sn.) 
Amalgam of lead. (Pl. Hg.) 
Alloy of zine with tin and lead. 
(Zn. Sn. Pl.) 
Alloy of zine with lead. (Zn. Pl.) 
Alloy of tin with lead amalgamated. 
Zine. 
Alloy of zine with tin amalgamated. 
Alloy of zine with lead amalga- 
mated. 
Alloy of zine, tin, and lead amalga- 
mated. 
Zine amalgamated. 
Amalgam of zine. (Zn. Hg.) 
Amalgam of an alloy of tin and 
lead. (Zn. Pl. Hg.) 
Amalgam of an alloy of tin and 
zinc. (Sn. Zn. Hg.) 
Amalgam of an alloy of tin, zinc, 
and lead. (Sn. Zn. Pl. Hg.) 
Amalgam of an alloy of zine and 
lead. (Zn. Pl. Hg.) 
a. 
Series I. 
ai Series Il. 
Tin. 
Lead. 
Tin amalgamated. h 
Amalgam of an alloy of tin with 
lead. 
Alloy of lead with tin. 
Lead amalgamated. 
Amalgam of tin. 
Alloy of zine with tin. 
Amalgam of lead. 
Tin with lead amalgamated. 
Alloy of zine, tin, and lead. 
Alloy of zine and lead. 
Zinc. 
Zinc amalgamated. 
Alloy of ‘zinc, tin, and lead amal- 
gamated. 
Alloy of zine and lead amalga- 
mated. 
Amalgam of zine. 
Amalgam of an alloy of tinand zine. 
Amalgam of an alloy of tin, zine, 
and lead. 
Amalgam of an alloy of zine with 
lead. 
Alloy of zine with tin amalga- 
mated. 
ao 
We see by the above that the alloys, and principally the amalgams, 
are always positive with relation to the simple metals. Most of the 
amalgams, excepting those of tin and lead, may be used in plates. As 
to the chemical action upon these various compositions, it did not take 
place in the amalgamated zinc and the amalgam of zine, any more than 
in any of the alloys and amalgams of tin and lead ; but in all the other 
compositions of zinc the disengagement of gas was very brisk. In the first 
series, the amalgam of an alloy of tin and lead occupies a very positive 
place, but the hope of profiting by this is negatived by the second series. 
In employing the amalgamated plates or the amalgams of zine, there 
occur various circumstances the cause of which I have not yet been able 
to discover. During the voltaic action particles of amalgam are often 
detached in the form of flakes, which float on the liquid, and are depo- 
sited on the copper or on the negative plates, so that these become by 
